I ran Windows 11 successfully on an Intel Mac under bootcamp. There is a hack where you create a new ISO using the bootloader from Win 10, but Win 11 is the delivery package.
There is also a reg trick you can use, without messing with ISOs.
I wouldn't be surprised if there is never a bootcamp for M1. First of all, there is no "official" ARM release of Windows. For now, MS allows downloads, but they could pull that at any second. Second, Apple dumped Intel because it was holding them back. I don't think Apple wants you to run Windows on M1s.